Laser-Driven Particle Acceleration Towards Radiobiology and Medicine by Antonio Giulietti

Author:Antonio Giulietti
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The injector-accelerator scheme was further demonstrated with two independent gas jet targets [27]. Figure 6.9 shows the experimental setup for injector-accelerator scheme using two independent gas jets and relevant experimental results. In the experiment, 60-fs, 25-J laser pulses were focused into 4-mm-long and 10-mm-long gas jet targets by a spherical mirror with a focal length of 4 m. The focusing position of the laser beam was located near to the entrance of the gas jet. In the single stage acceleration, energetic electrons peaking at 400 MeV were obtained from the 4-mm-long gas jet with an electron density of 2.1 × 1018 cm−3.

Fig. 6.9 a Experimental setup for the injector-accelerator scheme using two independent gas jets. b Electron spectrum produced from the injector and accelerated from the accelerator. Electrons peaked at 0.4 GeV were accelerated up to over 3 GeV in the accelerator. c Electron beam profiles. d 3D-PIC simulation results. Simulations supported electron energy spectra that were experimentally obtained. (Reproduced with permission from Kim et al. [28]. Copyright (2013), American Physical Society.)

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